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Paper | Regular issue | Vol 38, No. 3, 1994, pp.659-678
Published online, 1st January, 1970
DOI: 10.3987/COM-93-6627
Synthesis of 6-Methoxy-5,8-quinolinediones and 8-Methoxy-5,6-quinolinediones Using Oxidative Demethylation with Cerium (IV) Ammonium Nitrate

Yoshiyasu Kitahara, Yasuo Nagaoka, Tamaki Matsumura, and Akinori Kubo*

*Meiji College of Pharmacy, 1-35-23 Nozawa, Setagaya-ku, Tokyo 154 Japan

Abstract

6-Methoxy-5,8-quinolinediones (14-19) and 8-methoxy-5,6-quinolinediones (20-25) were synthesized by oxidative demethylation of the corresponding 5,6,8-trimethoxyquinolines (5, 7-9, 12, 13) with cerium (IV) ammonium nitrate.